Now showing items 414-433 of 902

    • Intracellular calcium movements during relaxation and recovery of superfast muscle fibers of the toadfish swimbladder 

      Nelson, Frank E.; Hollingworth, Stephen; Rome, Lawrence C.; Baylor, Stephen M. (Rockefeller University Press, 2014-04-14)
      The mating call of the Atlantic toadfish is generated by bursts of high-frequency twitches of the superfast twitch fibers that surround the swimbladder. At 16°C, a calling period can last several hours, with individual ...
    • Intrakinetochore stretch is associated with changes in kinetochore phosphorylation and spindle assembly checkpoint activity 

      Maresca, Thomas J.; Salmon, Edward D. (Rockefeller University Press, 2009-02-03)
      Cells have evolved a signaling pathway called the spindle assembly checkpoint (SAC) to increase the fidelity of chromosome segregation by generating a "wait anaphase" signal until all chromosomes are properly aligned within ...
    • Intrinsic dynamic behavior of fascin in filopodia 

      Aratyn, Yvonne S.; Schaus, Thomas E.; Taylor, Edwin W.; Borisy, Gary G. (American Society for Cell Biology, 2007-08-01)
      Recent studies showed that the actin cross-linking protein, fascin, undergoes rapid cycling between filopodial filaments. Here, we used an experimental and computational approach to dissect features of fascin exchange and ...
    • Introducing the JMBE themed issue on scientific citizenship 

      Gilbert, Jack A.; Klyczek, Karen K.; Elliott, Samantha L. (American Society for Microbiology, 2016-03)
      In this Editorial, the three Guest Editors for JMBE's first standalone themed issue introduce the topic of scientific citizenship and provide an overview of the current ideas and best practices contained within the issue.© ...
    • Introduction to the special issue on Antarctic oceanography in a changing world 

      Ducklow, Hugh W.; Orsi, Alejandro; Wellner, Julia S. (The Oceanography Society, 2012-09)
      "Antarctic Oceanography in a Changing World" commemorates the twentieth anniversary of the commissioning of Research Vessel Icebreaker (RVIB) Nathaniel B. Palmer and the fifteenth anniversary of Antarctic Research and ...
    • Ion trapping with fast-response ion-selective microelectrodes enhances detection of extracellular ion channel gradients 

      Messerli, Mark A.; Collis, Leon P.; Smith, Peter J. S. (2008-11)
      Previously, functional mapping of channels has been achieved by measuring the passage of net charge and of specific ions with electrophysiological and intracellular fluorescence imaging techniques. However, functional ...
    • Ionic composition of endolymph and perilymph in the inner ear of the oyster toadfish, Opsanus tau 

      Ghanem, Tamer A.; Breneman, Kathryn D.; Rabbitt, Richard D.; Brown, H. Mack (Marine Biological Laboratory, 2008-02)
      The concentrations of free Na+, K+, Ca2+, and Cl-in endolymph and perilymph from the inner ear of the oyster toadfish, Opsanus tau, were measured in vivo using double-barreled ion-selective electrodes. Perilymph concentrations ...
    • Iron supplementation does not worsen respiratory health or alter the sputum microbiome in cystic fibrosis 

      Gifford, Alex H.; Alexandru, Diana M.; Li, Zhigang; Dorman, Dana B.; Moulton, Lisa A.; Price, Katherine E.; Hampton, Thomas H.; Sogin, Mitchell L.; Zuckerman, Jonathan B.; Parker, H. Worth; Stanton, Bruce A.; O'Toole, George A. (2013-10)
      Iron supplementation for hypoferremic anemia could potentiate bacterial growth in the cystic fibrosis (CF) lung, but clinical trials testing this hypothesis are lacking. Twenty-two adults with CF and hypoferremic anemia ...
    • Is science as global as we think? 

      Wong, Bob B. M.; Kokko, Hanna (2005)
      A cornerstone of scientific practice is the perceived freedom with which knowledge is disseminated. But does the scientific community make good use of all that is available? Researchers have, on occasion, been accused of ...
    • Is the northern high-latitude land-based CO2 sink weakening? 

      Hayes, Daniel J.; McGuire, A. David; Kicklighter, David W.; Gurney, Kevin R.; Burnside, T. J.; Melillo, Jerry M. (American Geophysical Union, 2011-08-30)
      Studies indicate that, historically, terrestrial ecosystems of the northern high-latitude region may have been responsible for up to 60% of the global net land-based sink for atmospheric CO2. However, these regions have ...
    • Isolated communities of Epsilonproteobacteria in hydrothermal vent fluids of the Mariana Arc seamounts 

      Huber, Julie A.; Cantin, Holly V.; Huse, Susan M.; Mark Welch, David B.; Sogin, Mitchell L.; Butterfield, David A. (2010-05)
      Low-temperature hydrothermal vent fluids represent access points to diverse microbial communities living in oceanic crust. This study examined the distribution, relative abundance, and diversity of Epsilonproteobacteria ...
    • Isolation and ultrastructural characterization of squid synaptic vesicles 

      Pekkurnaz, Gulcin; Fera, Andrea; Zimmerberg-Helms, Jessica; DeGiorgis, Joseph A.; Bezrukov, Ludmila; Blank, Paul S.; Mazar, Julia; Reese, Thomas S.; Zimmerberg, Joshua (Marine Biological Laboratory, 2011-04)
      Synaptic vesicles contain a variety of proteins and lipids that mediate fusion with the pre-synaptic membrane. Although the structures of many synaptic vesicle proteins are known, an overall picture of how they are organized ...
    • Isotopic signals (18O, 2H, 3H) of six major rivers draining the pan-Arctic watershed 

      Yi, Y.; Gibson, J. J.; Cooper, Lee W.; Helie, J.-F.; Birks, S. J.; McClelland, James W.; Holmes, Robert M.; Peterson, Bruce J. (American Geophysical Union, 2012-03-22)
      We present the results of a 4-year collaborative sampling effort that measured δ18O, δ2H values and 3H activities in the six largest Arctic rivers (the Ob, Yenisey, Lena, Kolyma, Yukon and Mackenzie). Using consistent ...
    • The karyomastigont as an evolutionary seme 

      Chapman, Michael; Alliegro, Mark C. (University of Chicago Press, 2012-12)
      The problem of eukaryogenesis—the evolutionary mechanism whereby eukaryotic cells evolved from prokaryotes—remains one of the great unsolved mysteries of cell biology, possibly due to the reductionist tendency of most ...
    • The killer fly hunger games : target size and speed predict decision to pursuit 

      Wardill, Trevor J.; Knowles, K.; Barlow, L.; Tapia, G.; Nordstrom, Karin; Olberg, R. M.; Gonzalez-Bellido, Paloma T. (S. Karger AG, Basel, 2015-09-24)
      Predatory animals have evolved to optimally detect their prey using exquisite sensory systems such as vision, olfaction and hearing. It may not be so surprising that vertebrates, with large central nervous systems, excel ...
    • Killer whales and marine mammal trends in the North Pacific : a re-examination of evidence for sequential megafauna collapse and the prey-switching hypothesis 

      Wade, Paul R.; Burkanov, Vladimir N.; Dahlheim, Marilyn E.; Friday, Nancy A.; Fritz, Lowell W.; Loughlin, Thomas R.; Mizroch, Sally A.; Muto, Marcia M.; Rice, Dale W.; Barrett-Lennard, Lance G.; Black, Nancy A.; Burdin, Alexander M.; Calambokidis, John; Cerchio, Sal; Ford, John K. B.; Jacobsen, Jeff K.; Matkin, Craig O.; Matkin, Dena R.; Mehta, Amee V.; Small, Robert J.; Straley, Janice M.; McCluskey, Shannon M.; VanBlaricom, Glenn R. (Blackwell, 2007-10-26)
      Springer et al. (2003) contend that sequential declines occurred in North Pacific populations of harbor and fur seals, Steller sea lions, and sea otters. They hypothesize that these were due to increased predation by killer ...
    • Kin and population recognition in sympatric Lake Constance perch (Perca fluviatilis L.) : can assortative shoaling drive population divergence? 

      Behrmann-Godel, Jasminca; Gerlach, Gabriele; Eckmann, Reiner (2005-08-02)
      Prior studies have shown that perch (Perca fluviatilis L.) of Lake Constance belong to two genetically different but sympatric populations, and that local aggregations of juveniles and adults contain closely related kin. ...
    • Kinesin family member 6 (kif6) is necessary for spine development in zebrafish 

      Buchan, Jillian G.; Gray, Ryan S.; Gansner, John M.; Alvarado, David M.; Burgert, Lydia; Gitlin, Jonathan D.; Gurnett, Christina A.; Goldsmith, Matthew I. (2014-06)
      Idiopathic scoliosis is a form of spinal deformity that affects 2–3% of children and results in curvature of the spine without structural defects of the vertebral units. The pathogenesis of idiopathic scoliosis remains ...
    • Kinetic framework of spindle assembly checkpoint signaling 

      Dick, Amalie E.; Gerlich, Daniel W. (2013-08)
      The mitotic spindle assembly checkpoint (SAC) delays anaphase onset until all chromosomes have attached to both spindle poles1, 2. Here, we investigated SAC signaling kinetics in response to acute detachment of individual ...
    • Kinetochore alignment within the metaphase plate is regulated by centromere stiffness and microtubule depolymerases 

      Jaqaman, Khuloud; King, Emma M.; Amaro, Ana C.; Winter, Jennifer R.; Dorn, Jonas F.; Elliott, Hunter L.; Mchedlishvili, Nunu; McClelland, Sarah E.; Porter, Iain M.; Posch, Markus; Toso, Alberto; Danuser, Gaudenz; McAinsh, Andrew D.; Meraldi, Patrick; Swedlow, Jason R. (Rockefeller University Press, 2010-03-08)
      During mitosis in most eukaryotic cells, chromosomes align and form a metaphase plate halfway between the spindle poles, about which they exhibit oscillatory movement. These movements are accompanied by changes in the ...